Experimental Study on Humidity Structure and p-value of Undisturbed Loess in High-risk Slope. Issue 3 (August 2020)

• Record Type: Journal Article
• Authors: Jia, Yajun; Tang, Zhihong; Chen, Cunli; Liu, Naijun
• Is Part Of: IOP conference series. Volume 558:Issue 3(2020)
• Publication Date: 2020-08
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/558/3/032041
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: A long-term dry-wet cycle will cause changes in the internal structure of the loess, which will affect its permeability coefficient and slope properties. In this paper, through the dry-wet cycle test, the changes of permeability coefficient P value, porosity and dry density of undisturbed loess and remodelled loess under the action of dry-wet cycle are studied. Under the condition of dry-wet cycle, the permeability coefficient of undisturbed loess in high-risk slope decreases, and the permeability coefficient of remoulded loess increases. Remoulding the original loess of high-risk slopes due to soil erosion is more likely to cause gullies and internal erosion, accelerating the occurrence of original loess landslides and collapse of high-risk slopes.